Steam-generator



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W. E. PAGE.

STEAM GENERATOR.

No. 312,652. Patented Peb. 24, 1885.

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`W. H. PAGE.

STEAM GENERATOR.

Patented Feb. 24

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(No Model.) 3 sheets-sheet s. W. H. PAGE.

STEAM GENERATOR.

No. 312,652. Patent-ed Feb. 24, 1885.

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` VPATENT rrrcn.

VVLLIAM H. PAGE, OF NORVVICH,- CONNECTICUT.

STEAM-GENERATOR.

lSPECIFICATION forming part of Letters VPatent No. 312,652, dated February 24, 1885.

' application mea May 9, resi. (No model.)

T0 lotZZ whom it may concern:

.Be it known that I', VILLIAM H. PAGE, a. citizen of the United States, residing at Norwich, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in Steam-Generators; and I do declare the following to be a full, clear, and exact description of the designed for use in heating buildings; and it consists in certain new and useful improvements, substantially as hereinafter described,

` and pointed out in the claims.

5 is a detached detailview of the pipe.

l'n the drawings which form a part of this specification, and in which like letters of reference indicate like parts in the several drawings, Figurel is a vertical section through my improved generator on the line l 1 of Fig. 2. Fig. 2 is a transverse section taken on the line x x of Fig. 1. Fig. 3 is a transverse section taken onthe line g/ y of Fig. l. Fig. 4 is a similar section on the line e e of Fig. l. Fig. Fig. 6 is a bottom plan view of the gratedetached.

Referring to the drawings,A designates the generator, consisting of the lower part, A', containing the fire-box, grate, and ash-pit, and the upper part, A2, containing the boiler proper, said parts A' AZ being joined together, as hereinafter described, and inclosed within a jacket, A4.

The parts named have the following described construction, to wit:

B designates a casting which forms the base of the heater, and is provided with an opening, b, in the forward side thereof', for the removal of ashes, e., from the ash-pit B', and is closed by a ap or door, b', hinged at its up er edoe to lugs b2 pro'ecting from the top P s s 7 J of the casting B.

C designates a casting, the lower surface of which bears or rests upon the top of the casting B, while its upper edge is provided with an internal flange or ledge, upon which rests and rotates the double-acting grate D, as hereinafter described.

E designates a hollow tubular casting, the inner scalloped surface, e, of which forms the side walls of the fire-pot, the outer walls, e', being corrugated, as shown.

.e2 designates a plate cast with E upon the top thereof, and is provided upon its upper surface, near its edgcs,with V-shaped grooves e, for the reception of V-shaped iiangesf, formed upon the' lower surfaceof a plate, f', cast upon the lower ends of a series of tubes, F, extending downward from the boiler F'. The tubes F are open at each end, and register at their lower ends with apertures e",formed in the plate e2. (See Fig. 5.) rlhe lower surface of the boiler F' is concave convex in form, and serves as a crownsheet, which is provided with an upward depression, f3, which forms part of the opening a, through which fuel is introduced into the iirebox. rlhe top of the boiler F' is dome-shaped at its middle, and is provided at its center with a safetyvalve, F2, and at one side with a pipe, F3, whereby steam is conveyed from the genera1 torto the heaters above. Said top is level between the domeand the outer edges of the boiler, at which point it is provided with a series of apertures, f, corresponding in number and being immediately above the pipes F. the upper surface of the boiler top with flanges f2 g G G designate tubes extending from the top of the boiler F' to and opening through the lower end of the casting E. As will be seen, the tubes G extend down through. the tubes F through apertures e* in the plate eL of the casting E and between the side walls of said casting. Said tubes serve to hold the upper and lower sections of the generator together, as will be described farther on.

H designates a dome or cap placed upon the top of the boiler F', outside of the pipes G,

into which the products of combustion are discharged, and thence conducted by a pipe, H', or otherwise, to the open air.

h designates an opening formed in the cap The apertures ff are surrounded upon H, and which is closed by aghinged flap, h', said flap operating as a safety-valve in case of an explosion of gas in the generator.

I designates a pipe extending through the boiler from bottom to top lthereof, and openinginto the fire-box and cap H, respectively.A

This pipe is cone-shaped, as shown, and is for the purpose of conveying gas directly from the ire-box to the cap.

I designates a pipe extending from the ashpit to and opening into the lower end of the pipe I, whereby air may be mixed with the gas escaping from the fire-box, and thus cause it to burn while in the pipe.

J designates a jacket surrounding the casting E, said jacket extending from the boiler .F to the top of the basecasting B within the exterior jacket, A

K designates a cleaning-aperture formed in the rear of the base-casting B, and is closed by a flap, 7c, when desired.

L designates an air-space extendingfroln the outer surface of the j acket A* to and opening into the lire-box at the upper surface of the grate, and is closed at its outer end by a ap, Z. The tube L is to enable the grate to be cleaned of clinkers, Ste.

It will be observed that the upper and lower portions of thegenerator are secured together by the pipes G without the use of bolts, said pipes being secured at the bottom and top ends to the casting .E and boiler F, respectively, by rust-joints,thereby enabling the production of a generator that shall be simple in construction and more durable in practice than a similar article provided with securingbolts.

I provide my generator with an improved double acting grate, which I will now describe.

D designates the grate, composed of sections D D2, the outer one, D', being provided upon its lower surface with a series of gearteeth, d, which rest upon a flange, c2, formed upon the inner surface of the casting C. A portion of the fiange c at the forward side of the generator is broken away, and through the space thus formed the teeth m of a gearwheel, M, project to and engage with the teeth d upon the gratesection D. The gear-Wheel M is mounted upon the shaft M', journaled at its inner end in a hanger, h '2, and passing thence outward through the walls of the generator, its outer end being squared for the reception of a'handle for rotating the wheel and the grate.

d designate lugs projecting downward from the section D', for'the reception of ears d3 upon the inner grate-section, D2.

The ears d3 consist of short pieces applied to the grate after it is in position. The inner grate is kept in a normal level position by an ear, d, projecting from the inner surface of the section D.

The operation Aof my generator is as follows: Vater being introduced through a suitable pipe into the boiler, fire is started in the fire-pot, the products of combustion passing over `the top of the casting E, between the tubes F, and downward between the jacket J and the casting E, and thence upward through the pipes G to the pipe H. It will be seen that by this described tortuous passage of the products I am enabled to utilize nearly the entire amount of heat produced by the re.

I attach importance to the-inclined flaps or doors at each and every aperture of the geuerator, such doors o-r flaps being kept closed by gravity solely, whereby in the event of an explosion of gas within the generator such doors will readily open and be again closed without danger from re to surrounding objects or breakage to the generator.

Having thus described my preferred construction for carrying out my invention, I would have it understood that I am aware that changes therein can be made without departing from the principle or sacrificing the advantages thereof.

. What I claim as my invention, and desire to secure by Letters Patent of the United States, 1s-

1. A steam-generator constructed substantiallyas described, consisting of the upper and lower sections or castings, held together by the smoke-conducting iiues connected to said sections or castings by rust-joints, thereby dispensing with the use of bolts or rods, substantially as described, and for the purpose set forth.

2. lIn a steam-generator, a boiler constructed as described, having concavo-convex top and bottom, safety-valves, and a series of depending tubes, F, provided at Ytheir lower ends with a perforated plate, in combination with the hollow casting E, smoke-dues G, extending through the steam-dome, and grate D, substantially as described.

IOO

3. In a steam-generator, the combination of the hollow casting E, having scalloped inner side walls, corrugated outer side walls, and perforated top and bottom, said casting being surmounted by a boiler, F', having depending tubes' F, with a series of tubes, G, that pass through said hollow casting and boiler and are held in position therein by rust-joints, substantially as described, and for the purpose set forth.

4. In astearn-generator, aboiler constructed substantially as described, having a concavoconvex top and bottoni and a series of tubes depending therefrom, in combination with a tube passing through said boiler from bottom to top thereof, for the passage of gas, hollow scalloped and corrugated casting E, and grate D, substantially as described.

5. In a steam-boiler, the combination of the hollow casting E, having scalloped inner walls and corrugated outer walls surrounded by the boiler F', having concavo-convex top and bottom, pipe I, depending` tubes F, and safetyvalve, with an inclosing-jacket J and pipes G,

IIO

to conduct the products of combustion to the opening into the pipe I, whereby airis mixed smoke-Hue, substantially as described. with escaping gas. causing it to ignite, sub- 6. In a steam-generator, the combination of stantially as described. the hollow casting 4E, having scalloped inner In testimony whereof I affix my signature in 5 Walls and corrugated outer Walls, boiler F', presence of two Witnesses.

l having concavo-convex top and bottom, safetyl valve, depending tubes F, pipe I,'passing from WILLIAM H PAGE top to bottom of said boiler and opening into the ire-box, and a smoke-cap, with an air- :o pipe, I', extending .from the ash-pit to and Witnesses:

LUoIUs BROWN, IVM. W. HIGGINS. 

